Unfortunately, at the moment Team-managed projects are completely independent by design. There is no cloning or templates - every project is unique and must be configured uniquely.
If you need a template based approach that is simple to use, I would suggest creating a Jira Work Management (Jira Core or Business) project.
Also, Atlassian has the feature request below requesting to add this functionality:
I strongly recommend voting and adding a comment to the feature request.
Hope it helps!
👋 Hi there Jira Community! A few months ago we shared with you plans around renaming epics in your company-managed projects. As part of these changes, we highlighted upcoming changes to epics on...
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